On the excitonic Mott transition in the static screening approximation

Abstract

Within the static screening and binary collision approximations, the authors discuss the influence of the excitonic Mott transition on the optical inter-band density. They calculate semiclassically the changes in the density of states caused by the particle-particle interactions. Further, they follow separately the evolution of the spectrum of electron-hole pair states and the excitonic enhancement factor as a function of the carrier density. The continuous character of the transition becomes evident.